Facebook CEO Mark Zuckerberg holds a propeller pod of the solar-powered Aquila drone on stage during a keynote at the Facebook F8 conference in San Francisco, California, on April 12, 2016. (Stephen Lam/Reuters/File Photo)

Facebook ended its Project Aquila, which aimed to use drones to beam internet connectivity over regions with limited access.

The company said in a blog post Tuesday it will no longer design or build its own aircraft to beam internet connectivity over regions with limited access, a project it has been working on since 2014. Facebook is also closing its facility in the U.K. that managed drone design, development and testing. The social network was able to build and test the drone, called Aquila, but never managed to deploy it.

Facebook said there are now other companies in aerospace that are investing in the same kind of technology. So it’s time for the company to step out of the race. Instead of building, Facebook said it will work with partners like Airbus SE on high-altitude connectivity technologies.

Though it ultimately didn’t live up to its ambitions in the skies, the Aquila drone served as a visible symbol of innovation at a company where all of the most important work usually happens behind the scenes, in lines of software code. The Aquila, demonstrated at Facebook’s conferences and, at one point, touted in an innovation lab at the company’s headquarters, was frequently held up as an example of the important work Facebook was doing as part of its mission to connect the world via the internet. The company is still working on other technologies that can spread online access.

The original plan, unveiled in 2015, involved using balloons to lift unmanned drones with the wingspan of a Boeing 737 airplane to an altitude of 90,000 feet (27,400 meters). There, they would fly for as long as three months and transmit information using lasers. In the drone’s first test flight, it suffered a structural failure as it was coming in for landing, though the company has said it considers the flight a success.

“We were able to demonstrate that an aircraft of this design was viable -- with two successful, full-scale test flights,” Facebook said in its blog post.

The Aquila drone was part of the company’s Internet.org initiative to spread access to the billions of people around the world who still don’t have online capabilities, which had been a priority for Chief Executive Officer Mark Zuckerberg. The Menlo Park, California-based company is still working on those initiatives, but in May reassigned Chris Daniels, the head of product for the program, to run the mobile-messaging service WhatsApp instead. Facebook last year also changed its mission. Instead of connecting the world, it’s now focused on bringing people closer together.